Valve mechanism



oct.- 34,` 195s 5,451 WELLS 2,8555961 vALvE'mcHANIsM Filed Nov. 6, 195ef 1 I Y .mvENToR Sheldon E.We||s ATTORNEY Unite VALVE MECHANISM SheldonE. Wells, Youngstown, Ohio, assignor to LombardjCorporation, Youngstown,Ohio, a corporation of Ohio Application November 6, 1956, Serial No.620,620

3 Claims. l(Cl. 141-346) This invention relates to devices for fillingor evacuating receptacles with iluid from a supply tank and moreparticularly to a separable two-part valve for filling receptacles inwhich the parts, when separated, form seals for the receptacle andsupply tank respectively.

f. Although not limited thereto, the present invention is particularlyadapted for use in liilling or evacuating a chamber in a transportabledevice with a uid such as oxygen. In applications of this sort it isnecessary at all times to prevent the chamber from being exposed to theatmosphere so that the oxygen in the chamber will be as pure aspossible. In addition, some means must ,be provided for conveying oxygenbetween a supply tank and thechamber. This conveying means must be sepa-`rable so that the transportablefdevice may be detached `from the supplytank. y,It `is a primary object of this invention to provide a new andkimproved receptacle lling device.

gMore specifically, it is an object of the invention to provideareceptacle filling device which meets all of ythe requirementsenumerated above.

A still further object of the invention lies in the provision of areceptacle lilling or evacuating device which Vmay be controlled by asingle integral control means.

. The aboveand other objects of the invention will become readilyapparent from the following detailed description taken in connectionwith the accompanying v drawings which form a partl of this inventionand in which:

. Figure l is a cross-sectional view of the invention; and Fig. 2 is abroken-away top view of the valve actuating and synchronizing mechanismof the invention.

Referring to Fig. l, the invention is made up of two housings orpassageways and 12. The housing 10 isfadaptedufor connection to anyoxygen supply tankor the like at a pressure of 3000 p. s. i. or more sothat fluid from the supply tank feeds into the necked-down anged portion14 of housing 10; whereas housing 12 is adapted for connection to areceptacle in a transportable device by means of bolts, not shown, whichextend through flange 16. Necked-down portion 14 is secured to the mainportion of housing 10 by means of cap screws 18.

As will be understood, the housings 10 and 12 are permanently andsecurely fastened to the supply tank and transportable device,respectively, so as to become integral parts thereof.

In order to disengage the housings and permit the supply tank andtransportable device to be separated, the open end of housing 10 ismachined at 20 to provide a reduced-diameter extension which slides intoa valve packing gland 22 on the open end of housing 12. A spanner nut 24rides on the outer periphery of housing 10 between a ange 26 on thehousing body and a retainer ring 23 which may be brazed or threaded ontothe assembly. For quick connect and disconnect, the nut 24 is providedwith a series of L slots 30 which allow the nut to be slipped over asimilar number of matching dogs 32 formed in an annular member 34 whichts into the open end of housing 12. In this manner, a small angularthrow of a Spanner wrench tightly assembles the two housings 10 and 12.

Within housing 10 there is provided a globe disc type valve member 36which is adapted to engage with an annular valve seat 38. The valvemember is guided within housing 10 by a spider arrangement of wings 40and is provided with a spherical socket 42 and retainer plate 44 to forma ball joint connection for an operating push rod 46. As shown in Figs.l and 2, the opposite end of the push rod has a male clevis fitting 4Swhich is pivotally connected between the legs of a clevis-type crank 50.The crank is, in turn, mounted on a torque rod 52 which passes through apacking gland arrangement 54 in one wall of housing 10 as shown. The external end of the torque rod 52 carries a synchronizing gear 56 whichmeshes with a synchronizing gear 58 on a similar torque rod 60. As shownin Fig. l, the torque rod 6i) carries a second crank 62 which has acircular cam 64 mounted on its outer end. On the extreme outer end oftorque rod S2 is mounted another crank 66 which engages with a clevis 63carried on the forward end of the piston rod 70 of a double-acting fluidmotor 72. As will be understood, when the fluid motor 72 is pressurized,torque rods 52 and 60 will be forced to rotate inl opposite directionsin synchronism, the direction of rotation depending upon the sense inwhich double-acting fluid motor 72 is pressurized.

Cam 64 on crank 62 lis adapted to engage the end of a tappet 74 which iscarried within a bore provided in a spider ring 76 located within theopen end of housing 10. The other end of tappet 74 is adapted to engagea second globe disc type valve member 78 which is normally urged intoengagement with a valve seat 80 on annular member 34 by a coil spring82. The other end of the' coil spring abuts against a second spider ring84 as shown. Valve member 78 is also guided within housing 12 by aspider arrangement of wings 86.

In operation, when the two housings are separated, the receptaclecarrying housing 12 is free to be transported. Spring 82 will forcevalve member 78 to act as a check valve. Of course, any pressure Withinthe receptacle will aid in forcing valve member 78 against itsassociated seat 80. Cranks 50 and 62 will` be in the positions `shown sothat valve member 36 will be forced against seat 38 and fluid underpressure will be retained within the supply tank.

When it is desired to transfer fluid from the supply tank to thetransportable receptacle, the machined portion 20 of housing 10 isinserted into packing gland 22 in housing 12. The Spanner nut 24 isadjusted to slide over the dogs 32 and is then turned to securely fastentogether the two housings 10 and 12. The pressurev of the iluid in thesupply tank provides thrust in excess of that required to motivate thevalve actuating system illustrated. When the operator pressurizes thefluid motor 72 to open the valve, crank 50 will rotate in a clockwisedirection as shown in Fig. l while crank 62 will rotate in acounter-clockwise direction in synchronism with crank S2. Valve member36 is immediately unseated by virtue of the fact that its linkage tocrank 50 is a pin and ball arrangement. Valve member 78, however, is notimmediately opened since there is a clearance between cam 64 and tappet'74 as shown. As the cranks 50 and 62 continue rotating, valve member 7Swill be unseated also, but its total stroke will be less than that ofvalve member 36. This vshould not impair the flow on the fillingoperation since valve member 78` acts as a check valve opening its fullstroke as a result of ow and pressure. At the completion of the fillingoperation, the fluid motor 72 will be pressurized in the opposite senseto rotate the cranks 50 and 62 into the positions shown in'Fig. lwhereby 'the valve members will again be seated. Spanner nut 24 is thenrotated and the housings and l2 are separated, allowingithe fluidentrapped 'between the valve members to escape.

"If it is desired to evacuate the'receptacle inthe transportabledevice,l the process -described `above is repeated, but now Aluid owsfrom housing 12 .tohousing 10. Valve memberv 78 is prevented from.closing during evac- .uation by virtue of. the fact that cam- 64engagestappet 74.

Although the invention ,has been described in connection withtattcertainspecic embodiment, it will be readily apparent to those skilled in the-artfthat various changes iniorm and arrangement Lof vparts .may bemadeIo-suit requirements without departing from the spirit and scope of.the invention.

II .claimas my invention:

".1. 4 Apparatustor conducting fluidunder pressure -from one containerto another comprising, in combination, `a irst .open-ended passagewaycommunicating with ,the interior of said one container, asecondopeniended pas- .sageway communicating with the interior of theother container, means for securelylfastening together the open Aendsiofsaid passageways whereby uid under pressure in one container may beconducted to the other container 4through -saidtfpassageways, a valveseat in one .of said passageways, a first valve member engageablewithtsaid .valve seatl and movable therefrom in a direction away fromthe openend .ofsaid one passageway, yieldable means urging said rstvalve member against its associated valve seat, 1a valve seat in theother of said .passageways, Va second valve member engageable withzthevalve seat-in 'saidother passagewayand movable therefrom Ain a 'direc-,tion .away .fromlthe open end of'said other passageway, aytappetzmember carried within said 'other-passageway and .adapted todisengagesaidrst valve member ifrom vits `associated seat, a rst elementpivotally'carriedtwithin-one of said passageways, va linkage connectingthe free end of vsaidpivoted element to said second valve member wherebyYmovement of the pivoted element in onevdirecti-on will vdisengage saidsecond valve member from its associated seat, a second element pivotallycarried within oneof said fpassageways to engage said tappetmemberand'disengage said first valve ymember from its associated seat, saidsecond element being spaced from -said tappet member lwhereby said rstelement and linkage will disengage said 'second valvemernber Ibefore thetappet and secondele- `mentdisengage said first valve member, andgearing means interconnecting said pivoted elements whereby the elementswill rotate in opposite directions to disengage the rst and second valvemembers from 4their associated valve seats.

2. Apparatus for conducting a uid from one container to anothercomprising,'in combination, a''rst openexde'd passagewaycommunicatingwith the interior of one of said containers, a secondopen-ended passageway communicating with the interior of the other ofsaid containers, means for securely fastening together the open ends ofsaid passageways whereby'i'din one container may ow to the other throughysaid,passageways, a valve seat in one of said passageways, a tirstvalve member engageable with said -valve'-seat, `a valve seat'inCthe'otherff =sid passageways, a second valve member "'eng'ageable `with thevalve seat in said other passageway, a pair of elements pivotally:carried .between said ,.trst Vand :secondwalve members, a linkageconnecting the free end of one of said elements to one of saidvalvememberswhereby movement of said one element in one direction willdisengage said one valve member from its associated seat, a tappetmemberr spaced from-.theotherzof-:saidelements ndp0sitioned between-said Yvalvetmembers, tobe engagedzbytthe free endof the other of saidelementsfor dsengl'zingthe other .of A-said valve members from ;its.associated -vllve seat upon-.movementofthe other relement inoneniction, :and Ameans interconnecting said trst yandisecond .pivoted.elements whereby .theelements lwill'rotate in substantial synchronism,.the :spacing between .said ltappetmember fand said .otherelementxbeingzsuch that saidlinkage'and fsaid oneelement will disengage:said Aone `valvetxmznher' before :said other :element .and isaid'tappetzmember will disengage said other valve member.

:3. -;Inapparatusfof.theztype described, azrttcontainer, -a lsecondcontainer, apassagewayinterconnecting ldd containersfwhereby fluid inoueeontainertmay owllmgh said passageway to the other container,'r8tndledild `valve seats 4spaced :within "the npassageway, -'a `valveinsember associated withv each offsaidvalvetseats andengiglbleftherewithya pair of elements'pivotally 'can-ied'within-'laid.passageway between said valvemembers,:alinkge tively connecting one ofsaid `elements to one of 'slid -valve1members, `a tappet vmemberoperatively connected to the other lvalvemember andspaced-:from the'other U`f -said elements, and means for moving said velements abouttheir pivots in synchronism 'to 'dsengage said valve mem- `Abersfromftheir associated valve seats, the spacing-between 'said tappetmember and said other element being auch Athat vsaid linkage and saidone element Vwill disengage' `AReferences 'Cited n the `le of 'thispatent UNITED STATES PATENTS 2,649,109 samiran au', 13,1953

